EP 1098107 B1 20051207 - Air damper with adjustable air flow rate
Title (en)
Air damper with adjustable air flow rate
Title (de)
Luftdämpfer mit regelbarer Luftströmung
Title (fr)
Amortisseur pneumatique avec debit d'air réglable
Publication
Application
Priority
US 43679799 A 19991108
Abstract (en)
[origin: US6176475B1] The air damper includes a housing with cylindrical walls and a piston assembly reciprocating therein. The piston assembly includes an interior surface against which a seal abuts. The interior surface is textured in a grained pattern so that interstices are formed between the seal and the interior surface thereby forming an effective air passageway for damping. A cylindrical spacer spaces the interior surface from a retainer and the seal is engaged around the cylindrical spacer and between the retainer and the interior surface. An alternative embodiment inserts textile material through a damping orifice in order to vary the rate of damping.
IPC 1-7
IPC 8 full level
F16F 1/36 (2006.01); F16F 9/02 (2006.01); F16F 9/32 (2006.01); F16F 9/34 (2006.01); F16F 9/36 (2006.01); F16F 9/50 (2006.01)
CPC (source: EP KR US)
F16F 1/3615 (2013.01 - EP US); F16F 9/0218 (2013.01 - EP US); F16F 9/36 (2013.01 - KR); F16F 9/368 (2013.01 - EP US); F16F 9/50 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
US 6176475 B1 20010123; CA 2320591 A1 20010508; CA 2320591 C 20050104; DE 60024567 D1 20060112; DE 60024567 T2 20060629; EP 1098107 A2 20010509; EP 1098107 A3 20020515; EP 1098107 B1 20051207; JP 2001173705 A 20010626; JP 4842431 B2 20111221; KR 100719359 B1 20070517; KR 20010050474 A 20010615; MX PA00010878 A 20030425
DOCDB simple family (application)
US 43679799 A 19991108; CA 2320591 A 20000926; DE 60024567 T 20000923; EP 00120792 A 20000923; JP 2000340838 A 20001108; KR 20000054235 A 20000915; MX PA00010878 A 20001106